/*******************************************************************************
 * This file is part of blueprint4j www.blueprint4j.org.
 * 
 *     blueprint4j is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU Lesser General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 * 
 *     blueprint4j is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU Lesser General Public License for more details.
 * 
 *     You should have received a copy of the GNU Lesser General Public License
 *     along with blueprint4j. If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
package blueprint4j.utils;

import java.io.*;

public interface Upgradable {
	
	/**
	 * Must be the installed directory of the application from where the subversion files will be updated
	 */ 
	public File[] getBackupFiles();
	
	/**
	 * Returns the amount of sleeptime between checks
	 */
	public int getSleepTime();
	
	/**
	 * After files have been downloaded and overwritten
	 * Execute before JVM is restarted
	 */
	public void executeBeforeRestart();
	
	public boolean shouldStopThreadScheduable();
	/**
	 * This will be called when an upgrade has been completed
	 */
	public void restartJvm();
	
	/**
	 * Return based on your releasing structure which version is the latter then the current one
	 * Return null if the latest is the current
	 */
	public String[] getLatestToOldest(String files[]);
	
	public String getCurrentVersion();
	
	public boolean shouldUpgrade(String ver1);
	
	public boolean shouldBackupDB();
	
	public File getInstallDirectory();

}
